Non -toxic plastic bags are made of raw materials such as polyethylene, polypropylene and mighty, and can be used to pack food.Plastic bags made of polysthery are toxic and cannot be used for food packaging bags.So how to identify toxic plastic bags?How to choose a food plastic bag correctly?Lets take a look today.
How to correctly choose food plastic bags
1. The outer packaging of food bags for food should be marked with Chinese logo, marked the name of the factory, the site, and the product name, and indicate the words of food in obvious.After the product is exported, there are product inspection qualification certificates.
2. Food packaging bags are free to sniff, without odor when they leave the factory, and have special odor plastic packaging bags that cannot be used for food packaging.
3. Plastic packaging bags (dark red or black in the current market) cannot be used for food packaging.Because such plastic packaging bags are often made of recycled and regenerative plastic.
4. Try to use materials without coating and plating.In modern packaging design, in order to make the packaging more beautiful and corrosion, a large amount of materials with plating layers are used.This not only brings difficulties for the recycling and use of the materials after the product is scrapped, but most of the coatings themselves are toxic. If people eat these packaging foods, they will have a great harm to peoples bodies.In addition, the coating and plating process also brings great pollution to the environment.Such as the painting gas of the coating volatile toxic solvent gas, the waste liquid of chromium containing chromium and other heavy metals such as chromium and pollution of waste residue.Therefore, we should try to use packaging materials without coating and plating.
5. Choose food to buy from large shopping malls. Do not buy on the street stall.
6. Because the characteristics of food packaging bags are not easy to degrade, it will cause environmental pollution. Therefore, it is best to use green packaging materials when purchasing food.Paper is currently the most widely used green packaging material.Therefore, it is best to choose the original paper packaging when buying food, and biodegradable plastic.
How to identify toxic plastic packaging bags
Food plastic packaging bags are often used in peoples lives, but they must be careful when used. Some plastic packaging bags are toxic and cannot be used to put food directly.Lets teach you a few ways to identify it!
First, observe the non -toxic plastic bag with the eyes, transparent or transparent, and uniform texture; toxic plastic bags are color or white, but they are poorly transparent, more turbid, unevenly stretched on the plastic surface, and small particles.
Second, when listening to the ear with your ears, when you listen to your hands and make the plastic bag, a crisp sound indicates that it is a non -toxic plastic bag; the small and stuffy sound is a toxic plastic bag.
Third, touch the surface of the plastic packaging bag with your hands with your hands, it is smooth and non -toxic;
Fourth, it is tasteless to smell non -toxic plastic packaging bags with nose; those who have irritating odors or abnormal taste are toxic.
V. Shenshui test method Shenshui test puts the plastic bag in the water, press it to the bottom of the water, wait a moment, the surface of the water surface is non -toxic plastic packaging bag, and the toxic plastic packaging is sinking at the bottom of the water.bag.
6. The combustion method Burning test is non -toxic plastic bags to be non -toxic, the tip of the flame is yellow, the local is blue, and it is dripping like a candle tears when burning. It has a paraffin flavor.It is yellow, the bottom is green, and the softening can be brushed.

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